Question

Các bạn có thể giải giùm mik câu 6 đk

Answer 1

câu 1: C

câu 2: A

câu 3: A

câu 4: B

câu 5: C

câu 6:

\(NaCO_3\rightarrow Na_2CO_3\)

\(PTK=2.23+12+3.16=106\left(đvC\right)\)

\(CaNO_3\rightarrow Ca\left(NO_3\right)_2\)

\(PTK=40+\left(14+3.16\right).2=164\left(đvC\right)\)

\(KCl\)

\(PTK=39+35,5=74,5\left(đvC\right)\)

\(SO_2\)

\(PTK=32+2.16=64\left(đvC\right)\)

\(SO_3\)

\(PTK=32+3.16=80\left(đvC\right)\)

\(CO_2\)

\(PTK=12+2.16=44\left(đvC\right)\)

\(CO_3\)

\(PTK=12+3.16=60\left(đvC\right)\)

\(Fe_3O_2\rightarrow Fe_2O_3\)

\(PTK=2.56+3.16=160\left(đvC\right)\)

\(Al\left(SO_4\right)_2\rightarrow Al_2\left(SO_4\right)_3\)

\(PTK=2.27+\left(32+4.16\right).3=342\left(đvC\right)\)

\(BaCO_3\)

\(PTK=137+12+3.16=197\left(đvC\right)\)